monroe. but the whole sense of the appropriated image in cindy's work because three quarters of the time you see a image by cindy sherman and you say "i know i've seen this movie, i know where that comes from." maybe you did, maybe you didn't. >> rose: okay, the next one. (laughs) john? >> yeah, well, i could add that these were from pornographic '70s porn from denmark and i think -- speaking of photography one approach -- one approach i had to getting over the guilt about using photography was to use -- was to use pornography as a source, as a sort of keep the photograph at a -- something that's essentially photographic and i must say i've always felt -- every artist never gets over the slight guilt of using -- maybe perhaps you have overcome that but the guilt of using a photograph as a -- and i think that's a big part of warhol's effect the way it's screened on in black, that's like the corpse and the color is an attempt to animate it. >> rose: these are the categories "the daily news, fro